linux-kernel - Re: [PATCH v4] x86/boot: Use efi_setup_data for searching RSDP on kexec-ed kernel

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Message-ID: <20190417085434.GC20492@zn.tnic>
Date:   Wed, 17 Apr 2019 10:54:34 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Dave Young <dyoung@...hat.com>,
        Junichi Nomura <j-nomura@...jp.nec.com>
Cc:     Chao Fan <fanc.fnst@...fujitsu.com>, Baoquan He <bhe@...hat.com>,
        Kairui Song <kasong@...hat.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4] x86/boot: Use efi_setup_data for searching RSDP on
 kexec-ed kernel

On Wed, Apr 17, 2019 at 03:02:50PM +0800, Dave Young wrote:
> How about move it after console_init,

Sounds ok to me. That's still before KASLR gets setup and should work
for Chao's movable regions too.

> and at the same time skip efi_get_rsdp_addr in case kexec?

If kexec_get_rsdp_addr() gets a correct address, efi_get_rsdp_addr()
will be skipped.

-- 
Regards/Gruss,
    Boris.

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